60 Gbps 4-PAM VCSEL-based Raman assisted hyper-scale data centre: In context of spectral efficiency and reach extension

Isoe, G. M.; Wassin, Shukree; Leitch, A.W.R.; Gibbon, T. B.

doi:10.1016/j.optcom.2018.07.063

Cited by 15 publications

(2 citation statements)

References 10 publications

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“…SM operation long-wave (LW) VCSELs operating at a wavelength of 1300-1550 nm, which provide data transmission over distances of more than 1 kilometer through the second and third optical fiber transmission windows, are used in high-performance urban networks to reduce energy consumption and occupied space by electronic components [14,15]. Furthermore, SM LW VCSELs can be used for optical interconnections with a small radius of operation, for example, in transceivers or active optical cables [16], since the combination of SM and multimode fibers in data processing centers requires the use of wavelength-separated multiplexing devices to increase both the capacity and the accessibility of the data centers [17].…”

Section: Introductionmentioning

confidence: 99%

Review on Single-Mode Vertical-Cavity Surface-Emitting Lasers for High-Speed Data Transfer

Rochas¹,

Kovach²,

Kopytov³

et al. 2022

Rev. Adv. Mater. Technol.

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Vertical-cavity surface-emitting lasers (VCSELs) are wide-spread laser sources for different applications in optical communication and sensing. The evolution of fabrication processes and new technological approaches allow to obtain high-Q single-mode VCSELs with data rates more than 100 Gbps. This review discusses basic designs and construction features of VCSELs that effect on their applications. The advances over the past 20 years for single-mode VCSELs of 850 nm, 1300 nm and 1550 nm wavelength ranges are presented.

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Section: Introductionmentioning

confidence: 99%

Review on Single-Mode Vertical-Cavity Surface-Emitting Lasers for High-Speed Data Transfer

Rochas¹,

Kovach²,

Kopytov³

et al. 2022

Rev. Adv. Mater. Technol.

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“…Upgrading network capacity, spectral and power efficiency at low installation costs, as well as extending the reach between hyper-scale data centre network nodes are still key challenges facing current long reach high capacity optical interconnects. To meet the data tsunami demands from global Internet users, service providers have continuously worked towards upgrading the network transmission layer to higher lane rates and more parallel architectures [9]. A higher data rate achieved using either higher-order modulation format or higher symbol rate, places tremendous pressure on the component in terms of SNR requirement or bandwidth requirement.…”

Section: Introductionmentioning

confidence: 99%

20 G bps Pulse Amplitude Modulation (PAM) Format for Capacity Upgrade in Optical Communications

Kipkoech¹,

Wafula²,

Mosoti³

et al. 2019

AJOP

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In the fast growing society, communication is broadening so rapidly such that internet users need to access information rapidly and amount of data flowing through internet is very huge. Various techniques for increasing capacity in data centers have drawn lots of attention in recent years. One way of addressing this demand is introduction of advanced optical modulation formats which has been motivated by the demand for high transmission capacity and better system reliability. In this work, two electrical data streams at bit rate of 10 G bps each were combined to produce 20 G bps multilevel system 4-PAM with four levels. One of the four amplitudes represents a combination of two bits (00, 01, 10, 11) per symbol. This therefore transmits two bits in parallel and therefore the data rate is doubled. The generated data was transmitted over 3.21km G.652 fiber at standard BER of 10 -9 . This format can be used to simultaneously transmit two bits per symbol per wavelength thereby increasing the overall link transmission speed while maintaining the channel bandwidth. We further demonstrated a digital signal processing assisted receiver to efficiently recover the transmitted signal without employing costly receiver hardware. The ability to use a single photodiode to demodulate the multilevel signal, brings a further reduction in cost on implementing the scheme. This spectral efficient modulation format will achieve even higher data rate per channel when coupled in a Dense Wavelength Division Multiplexing (DWDM) system. This will therefore lead to significant cost saving of capital investment and easing the system management and hence an efficient utilization of bandwidth.

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Real-time wavelength routing based on Bragg reflection with integrated forward Raman for long-reach networks

Isoe

Gibbon

2020

Optoelectron. Lett.

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60 Gbps 4-PAM VCSEL-based Raman assisted hyper-scale data centre: In context of spectral efficiency and reach extension

Cited by 15 publications

References 10 publications

Review on Single-Mode Vertical-Cavity Surface-Emitting Lasers for High-Speed Data Transfer

Review on Single-Mode Vertical-Cavity Surface-Emitting Lasers for High-Speed Data Transfer

20 G bps Pulse Amplitude Modulation (PAM) Format for Capacity Upgrade in Optical Communications

Real-time wavelength routing based on Bragg reflection with integrated forward Raman for long-reach networks

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